Submission for Part 1 of assignment

.gitignore

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+# IntelliJ project files
+.idea
+*.iml
+

src/tfc/Darasa.java

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+package tfc;
+
+import java.util.ArrayList;
+
+public class Darasa {
+    // list of class members
+    ArrayList<String> classMembers;
+
+    public Darasa() {
+        // initialize list on instantiation
+        classMembers = new ArrayList<>();
+    }
+
+    // this method returns true if addition is successful and false otherwise
+    public boolean addClassMember(String name) {
+        // check if name exists
+        if (classMembers.contains(name)) {
+            return false;
+        } else {
+            // add member
+            classMembers.add(name);
+            return true;
+        }
+    }
+
+    // this method returns true if removal is successful and false otherwise
+    public boolean removeClassMember(String name) {
+        // check if name exists
+        if (classMembers.contains(name)) {
+            // remove member
+            classMembers.remove(name);
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    // this method returns the members of the class as a list
+    public ArrayList<String> getDarasaMembers() {
+        return classMembers;
+    }
+}

src/tfc/SangJoseph.java

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+package tfc;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+public class SangJoseph {
+    public static void main(String[] args) {
+        // create instances
+        Darasa standard1 = new Darasa();
+        Darasa standard2 = new Darasa();
+        Darasa standard3 = new Darasa();
+
+        // add members
+        standard1.addClassMember("Githeko");
+        standard1.addClassMember("Muschiri");
+
+        standard2.addClassMember("Wambugu");
+        standard2.addClassMember("Kamande");
+
+        standard3.addClassMember("Joseph");
+        standard3.addClassMember("Kibet");
+
+        // create school
+        Shule hillSchool = new Shule("Hill School");
+        // add darasas
+        hillSchool.addDarasa("Standard 1", standard1);
+        hillSchool.addDarasa("Standard 2", standard2);
+        hillSchool.addDarasa("Standard 3", standard3);
+
+        // display all classes and students
+        List list = hillSchool.getShule();
+        System.out.println("School: " + list.get(0));
+        HashMap dictionary = (HashMap<String, Darasa>) list.get(1);
+        System.out.println("--");
+        Iterator iterator = dictionary.entrySet().iterator();
+        while (iterator.hasNext()) {
+            Map.Entry pair = (Map.Entry) iterator.next();
+            System.out.println("Class: " + pair.getKey());
+            Darasa darasa = (Darasa) pair.getValue();
+            for (String name : darasa.getDarasaMembers()) {
+                System.out.println(name);
+            }
+            System.out.println("--");
+        }
+    }
+}

src/tfc/Shule.java

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+package tfc;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+public class Shule {
+    // fields
+    private String shuleName;
+    private HashMap<String, Darasa> shule;
+
+    // constructor that assigns school name and instantiates dictrionary
+    public Shule(String shuleName) {
+        this.shuleName = shuleName;
+        shule = new HashMap<>();
+    }
+
+    // add a darasa and return dictionary representation
+    public HashMap<String, Darasa> addDarasa(String darasaName, Darasa darasa) {
+        if (shule.containsKey(darasaName)) {
+            // if darasa name already exists, do not add
+            return shule;
+        } else {
+            shule.put(darasaName, darasa);
+            return shule;
+        }
+    }
+
+    // remove a darasa and return dictionary representation
+    public HashMap<String, Darasa> removeDarasa(String darasaName) {
+        shule.remove(darasaName);
+        return shule;
+    }
+
+    public List getShule() {
+        // create a list
+        List shuleInfo = new ArrayList();
+        // insert school name
+        shuleInfo.add(shuleName);
+        // insert dictionary of darasas
+        shuleInfo.add(shule);
+        return shuleInfo;
+    }
+}